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Automatic regulating or controlling instruments and apparatus; parts and accessories thereof: > Other instruments and apparatus: > Other: > Other > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 9032.89.60.85
Programmable Humidity Regulator for Greenhouse
A controller that senses relative humidity via sensors and automatically activates humidifiers or dehumidifiers to hold setpoint levels in agricultural environments. HTS 9032.89.60.85 applies to such automatic apparatus for regulating non-electrical variables like moisture content against fluctuations. It features PID control for stability.
Batch Weighing Controller for Food Processing
Digital controller that automatically dispenses ingredients by weight, stopping at precise batch totals in mixers for consistent food production. HTS 9032.89.60.85 covers other automatic regulators though primarily for flow/level/pressure; extends to weight-based via note 5. Stabilizes against ingredient variations.
Vibration Monitoring Regulator for Machinery
System that measures equipment vibration levels and automatically reduces speed or activates dampers when exceeding safe thresholds. Under HTS 9032.89.60.85 as other automatic controllers for mechanical variables. Prevents damage through setpoint maintenance.
Speed Control Governor for Conveyor Systems
Electronic governor that regulates motor speed based on belt load feedback to maintain consistent conveyor throughput. HTS 9032.89.60.85 for other automatic speed regulators in industrial applications. Stabilizes against varying loads.
Tension Control Unit for Paper Winding Machines
Automatic tension regulator using load cells to adjust web tension during paper roll production, preventing breaks or slippage. Classified HTS 9032.89.60.85 as other regulators for mechanical force variables. Maintains constant tension via feedback.
Industrial PLC Temperature Controller
A programmable logic controller-based device that automatically monitors and regulates temperature in manufacturing processes by measuring sensor inputs and adjusting heaters or coolers. It falls under HTS 9032.89.60.85 as an automatic regulating instrument for temperature control, designed to maintain precise setpoints against disturbances. This subheading covers other non-electrical quantity regulators not specified elsewhere in heading 9032.
Automatic pH Control System for Water Treatment
An integrated apparatus that continuously measures pH levels in water and automatically dispenses acid or base to maintain target values in industrial treatment plants. Classified under HTS 9032.89.60.85 for other automatic regulators of non-electrical quantities like chemical concentration. It stabilizes process variables through periodic measurement and adjustment.
Flow Rate Automatic Controller for Pipeline
Device that measures fluid flow and automatically adjusts valves to maintain constant rates in oil/gas pipelines, compensating for pressure changes. Under HTS 9032.89.60.85 as other automatic flow regulators for liquids/gases per chapter note 5(a). Ensures stabilized flow through continuous monitoring.
Level Control Relay for Wastewater Tanks
Automatic relay system using ultrasonic sensors to detect liquid levels and control pumps to prevent overflow or dry running in sewage treatment. HTS 9032.89.60.85 for other level regulating apparatus maintaining desired values via feedback. Complies with note 5(a) for liquid level control.
Pressure Stabilizer for Compressed Air Systems
Apparatus that monitors air pressure and automatically modulates compressor output or relief valves to hold steady PSI in manufacturing lines. Falls in HTS 9032.89.60.85 as other automatic pressure regulators for gases. Maintains setpoint against load variations per note 5(a).